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Li S, Liang F, Huang D, Wu H, Tan X, Ma J, Wei C, Wang S, Huang Z, Yang G, He X, Yang J. Diterpenoids from the Aerial Parts of Isodon serra with Selective Cytotoxic Activity. Molecules 2024; 29:2733. [PMID: 38930799 PMCID: PMC11207078 DOI: 10.3390/molecules29122733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2024] [Revised: 05/27/2024] [Accepted: 05/31/2024] [Indexed: 06/28/2024] Open
Abstract
Four new diterpenoids, isodosins A-D (1-4), together with nine known compounds (5-13) were isolated and identified from the aerial parts of Isodon serra (Maxim.) Hara. The structures of the new diterpenoids were elucidated based on the analysis of HR-ESI-MS data, 1D/2D-NMR-spectroscopic data, and electronic circular dichroism (ECD) calculations. Cytotoxicities of compounds 2, 3, 5, 6, and 9 against the HepG2 and H1975 cell lines were evaluated with the MTT assay. As a result, compounds 2, 3, and 6 revealed higher levels of cytotoxicity against HepG2 cells than against H1975 cells. Moreover, compund 6 demonstrated the most efficacy in inhibiting the proliferation of HepG2 cells, with an IC50 value of 41.13 ± 3.49 μM. This effect was achieved by inducing apoptosis in a dose-dependent manner. Furthermore, the relationships between the structures and activities of these compounds are briefly discussed.
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Affiliation(s)
- Siqin Li
- School of Traditional Chinese Materia Medica, Guangdong Pharmaceutical University, Guangzhou 510006, China; (S.L.); (F.L.); (D.H.); (H.W.); (X.T.); (J.M.); (C.W.); (S.W.); (Z.H.)
| | - Fang Liang
- School of Traditional Chinese Materia Medica, Guangdong Pharmaceutical University, Guangzhou 510006, China; (S.L.); (F.L.); (D.H.); (H.W.); (X.T.); (J.M.); (C.W.); (S.W.); (Z.H.)
| | - Dongdong Huang
- School of Traditional Chinese Materia Medica, Guangdong Pharmaceutical University, Guangzhou 510006, China; (S.L.); (F.L.); (D.H.); (H.W.); (X.T.); (J.M.); (C.W.); (S.W.); (Z.H.)
| | - Huanling Wu
- School of Traditional Chinese Materia Medica, Guangdong Pharmaceutical University, Guangzhou 510006, China; (S.L.); (F.L.); (D.H.); (H.W.); (X.T.); (J.M.); (C.W.); (S.W.); (Z.H.)
| | - Xiaohua Tan
- School of Traditional Chinese Materia Medica, Guangdong Pharmaceutical University, Guangzhou 510006, China; (S.L.); (F.L.); (D.H.); (H.W.); (X.T.); (J.M.); (C.W.); (S.W.); (Z.H.)
| | - Jiang Ma
- School of Traditional Chinese Materia Medica, Guangdong Pharmaceutical University, Guangzhou 510006, China; (S.L.); (F.L.); (D.H.); (H.W.); (X.T.); (J.M.); (C.W.); (S.W.); (Z.H.)
| | - Caihong Wei
- School of Traditional Chinese Materia Medica, Guangdong Pharmaceutical University, Guangzhou 510006, China; (S.L.); (F.L.); (D.H.); (H.W.); (X.T.); (J.M.); (C.W.); (S.W.); (Z.H.)
| | - Shixiong Wang
- School of Traditional Chinese Materia Medica, Guangdong Pharmaceutical University, Guangzhou 510006, China; (S.L.); (F.L.); (D.H.); (H.W.); (X.T.); (J.M.); (C.W.); (S.W.); (Z.H.)
| | - Ziying Huang
- School of Traditional Chinese Materia Medica, Guangdong Pharmaceutical University, Guangzhou 510006, China; (S.L.); (F.L.); (D.H.); (H.W.); (X.T.); (J.M.); (C.W.); (S.W.); (Z.H.)
| | - Guang Yang
- China Academy of Chinese·Medical Sciences, Beijing 100700, China;
| | - Xin He
- School of Traditional Chinese Materia Medica, Guangdong Pharmaceutical University, Guangzhou 510006, China; (S.L.); (F.L.); (D.H.); (H.W.); (X.T.); (J.M.); (C.W.); (S.W.); (Z.H.)
| | - Ji Yang
- School of Traditional Chinese Materia Medica, Guangdong Pharmaceutical University, Guangzhou 510006, China; (S.L.); (F.L.); (D.H.); (H.W.); (X.T.); (J.M.); (C.W.); (S.W.); (Z.H.)
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Mu L, Li T, Wu PL, Cai LQ, Li SY, Wang ZY, Liu YY, Wang J, Yan D, Rao ZY, Wang CJ, Zhang J, Cao Y, Pan K, Yin ZQ. 5-epi-ent-Kaurane diterpenoids from the aerial parts of Isodon eriocalyx and their anti-atherosclerotic potential. PHYTOCHEMISTRY 2023; 209:113621. [PMID: 36893826 DOI: 10.1016/j.phytochem.2023.113621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 02/21/2023] [Accepted: 02/22/2023] [Indexed: 06/18/2023]
Abstract
The phytochemical investigation of the EtOAc extract from the aerial parts of Isodon eriocalyx afforded seventeen diterpenoids, including eight undescribed compounds. Eriocalyxins H-L have unique structural characteristics featuring a 5-epi-ent-kaurane diterpenoid scaffold with eriocalyxins H-K also possess an unusual 6,11-epoxyspiro-lactone ring while eriocalyxin L, a 1,7:3,20-diepoxy-ent kaurene, features an 1,7-oxygen linkage. The structures of these compounds were elucidated by spectroscopic data interpretation, and the absolute configurations of eriocalyxins H, I, L, and M were confirmed by single-crystal X-ray diffraction. The isolates were screened for their inhibitory activities against VCAM-1 and ICAM-1 at 5 μM. While eriocalyxin O, coetsoidin A and laxiflorin P were found to significantly inhibit both VCAM-1 and ICAM-1, 8 (17),13-ent-labdadien-15 → 16-lactone-19-oic acid displayed evidently inhibitory effect against ICAM-1.
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Affiliation(s)
- Long Mu
- Department of TCMs Pharmaceuticals & Department of Natural Medicinal Chemistry, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, China
| | - Tian Li
- Nanjing Lishui District Hospital of Traditional Chinese Medicine, Nanjing, 211200, China
| | - Peng-Lin Wu
- China Tobacco Jiangsu Industrial Co., Ltd, Nanjing, 210019, China
| | - Ling-Qiao Cai
- Department of TCMs Pharmaceuticals & Department of Natural Medicinal Chemistry, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, China
| | - Shu-Ying Li
- Department of TCMs Pharmaceuticals & Department of Natural Medicinal Chemistry, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, China
| | - Zi-Yuan Wang
- Department of TCMs Pharmaceuticals & Department of Natural Medicinal Chemistry, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, China
| | - Yuan-Yuan Liu
- Nanjing Lishui District Hospital of Traditional Chinese Medicine, Nanjing, 211200, China
| | - Jie Wang
- Instrumental Analysis Center of CPU, China Pharmaceutical University, Nanjing, 210009, China
| | - Dong Yan
- Institute of Drug Discovery, Hongyun Pharmaceutical Co., Ltd, Chengdu, PR China
| | - Zheng-Yun Rao
- Institute of Drug Discovery, Hongyun Pharmaceutical Co., Ltd, Chengdu, PR China
| | - Chao-Jun Wang
- Institute of Drug Discovery, Hongyun Pharmaceutical Co., Ltd, Chengdu, PR China
| | - Jian Zhang
- Nanjing Lishui District Hospital of Traditional Chinese Medicine, Nanjing, 211200, China; Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210028, China
| | - Yi Cao
- China Tobacco Jiangsu Industrial Co., Ltd, Nanjing, 210019, China.
| | - Ke Pan
- Department of TCMs Pharmaceuticals & Department of Natural Medicinal Chemistry, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, China.
| | - Zhi-Qi Yin
- Department of TCMs Pharmaceuticals & Department of Natural Medicinal Chemistry, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, China.
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Periplocin exerts antitumor activity by regulating Nrf2-mediated signaling pathway in gemcitabine-resistant pancreatic cancer cells. Biomed Pharmacother 2023; 157:114039. [PMID: 36423542 DOI: 10.1016/j.biopha.2022.114039] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 11/17/2022] [Accepted: 11/19/2022] [Indexed: 11/22/2022] Open
Abstract
Although gemcitabine-based chemotherapy is common and effective for pancreatic cancer (PC), acquired drug resistance is one of the major reasons for treatment failure. Therefore, a novel therapeutic approach for gemcitabine-resistant PC is required. Nuclear factor erythroid 2-related factor 2 (Nrf2) is an oxidative stress-responsive transcription factor regulating antioxidant responses and plays a crucial role in chemoresistance. In the present study, the antitumor activity of periplocin, a natural cardiac glycoside, was evaluated in an established gemcitabine-resistant PC cell line (PANC-GR). Nrf2 was overexpressed in gemcitabine-resistant cells, and Nrf2 knockdown recovered gemcitabine sensitivity in PANC-GR cells. The antiproliferative activity of periplocin was highly associated with Nrf2 downregulation and Nrf2-mediated signaling pathways in PANC-GR cells. Periplocin also increased reactive oxygen species production inducing G0/G1 cell cycle arrest and apoptosis in PANC-GR cells. Periplocin and gemcitabine combined significantly inhibited tumor growth in a PANC-GR cells-implanted xenograft mouse model via Nrf2 downregulation. Overall, these findings suggest that periplocin might be a novel therapeutic agent against gemcitabine resistance, as it could recover sensitivity to gemcitabine by regulating Nrf2-mediated signaling pathways in gemcitabine-resistant PC cells.
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Hao X, Fan H, Yang J, Tang J, Zhou J, Zhao Y, Huang L, Xia Y. Network Pharmacology Research and Dual-omic Analyses Reveal the Molecular Mechanism of Natural Product Nodosin Inhibiting Muscle-Invasive Bladder Cancer in Vitro and in Vivo. JOURNAL OF NATURAL PRODUCTS 2022; 85:2006-2017. [PMID: 35976233 DOI: 10.1021/acs.jnatprod.2c00400] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Bladder cancer, specifically, muscle-invasive bladder cancer (MIBC), is among the most common malignant tumors. Patients with MIBC who cannot tolerate standard drugs require novel treatments. Targeting apoptosis may help treat cancer, which may be achieved with the use of some natural products. Nodosin, found in Isodon serra (Maxim.) Kudo (known as Xihuangcao), may inhibit bladder cancer cells. Transcriptomics and proteomics dual-omic analyses revealed the network pharmacological mechanism: (1) blocking the S phase by up-regulating RPA2, CLSPN, MDC1, PDCD2L, and E2F6 gene expressions, suppressing cancer cell proliferation; (2) inducing apoptosis and autophagy and restraining ferroptosis by up-regulating HMOX1, G0S2, SQSTM1, FTL, SLC7A11, and AIFM2 gene expressions; (3) preventing cancer cell migration by down-regulating NEXN, LIMA1, CFL2, PALLD, and ITGA3 gene expressions. In vivo, nodosin inhibited bladder cancer cell growth in a model of xenograft tumor in nude mice. This study is the first to report basic research findings on the network pharmacological mechanism of cytotoxicity of bladder cancer cells by nodosin, providing novel evidence for the application of nodosin in the field of oncology; however, other mechanisms may be involved in the effects of nodosin for further research. These findings provide a foundation for the development of novel MIBC drugs.
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Affiliation(s)
- Xiaopeng Hao
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, Henan 450008, China
- Key Laboratory of Precision Oncology of Shandong Higher Education, Institute of Precision Medicine, Jining Medical University, Jining, Shandong 272067, China
| | - Huixia Fan
- Key Laboratory of Precision Oncology of Shandong Higher Education, Institute of Precision Medicine, Jining Medical University, Jining, Shandong 272067, China
| | - Jian Yang
- State Key Laboratory Breeding Base of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Jinfu Tang
- State Key Laboratory Breeding Base of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Junhui Zhou
- State Key Laboratory Breeding Base of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Yuyang Zhao
- State Key Laboratory Breeding Base of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Luqi Huang
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, Henan 450008, China
- State Key Laboratory Breeding Base of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Yong Xia
- Key Laboratory of Precision Oncology of Shandong Higher Education, Institute of Precision Medicine, Jining Medical University, Jining, Shandong 272067, China
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Fan H, Hao X, Gao Y, Yang J, Liu A, Su Y, Xia Y. Nodosin Exerts an Anti-Colorectal Cancer Effect by Inhibiting Proliferation and Triggering Complex Cell Death in Vitro and in Vivo. Front Pharmacol 2022; 13:943272. [PMID: 35935881 PMCID: PMC9353177 DOI: 10.3389/fphar.2022.943272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 06/20/2022] [Indexed: 11/13/2022] Open
Abstract
Colorectal cancer (CRC) is one of the most common digestive system cancer in the world. Its incidence and mortality are increasing annually. Presently, CRC lacks long-term effective treatment methods and drugs. Therefore, finding new treatment methods and drugs is of great significance for CRC treatment. Compounds derived from natural plants have been widely used in tumor research and treatment because of their good antitumor activity these years. This study found that nodosin, a diterpenoid extracted from the medicinal plant Rabdosia serra (Maxim.) Hara, inhibited the growth of CRC cells SW480, HT-29 and LoVo in a dose- and time-dependent manner, with inhibitory concentrations (IC50) of 7.4, 7.7, and 6.6 μM respectively. We selected highly metastatic and poorly differentiated SW480 cells for further studies. We found that nodosin could inhibit cell proliferation by inhibiting DNA synthesis and induce cell death by inducing oxidative stress, apoptosis and autophagy in cells. Through in vitro assays combined with transcriptomic analysis, it was found that nodosin could downregulate tribbles pseudokinase 3 and upregulate oxidative stress-induced growth inhibitor 1 to induce oxidative stress in cells; nodosin-induced reactive oxygen species were able to upregulate the expression of heme oxygenase 1 to induce apoptosis and the expression of cathepsin L. and light chain-3 to induce autophagy. In vivo, we found that nodosin inhibited tumor growth and induced cells to undergo apoptosis and autophagy without significant toxic effects. In conclusion, our findings suggest that nodosin exerts anti-CRC effects mainly through its ability to induce apoptosis and autophagy in vitro and in vivo. Therefore, our study contributes to the development of nodosin-based potential CRC therapeutic drugs.
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Affiliation(s)
- Huixia Fan
- School of Life Sciences, Henan University, Kaifeng, China
- Key Laboratory of Precision Oncology of Shandong Higher Education, Institute of Precision Medicine, Jining Medical University, Jining, China
- School of Pharmacy, Henan University, Kaifeng, China
| | - Xiaopeng Hao
- Key Laboratory of Precision Oncology of Shandong Higher Education, Institute of Precision Medicine, Jining Medical University, Jining, China
| | - Yuan Gao
- Key Laboratory of Precision Oncology of Shandong Higher Education, Institute of Precision Medicine, Jining Medical University, Jining, China
| | - Jian Yang
- State Key Laboratory Breeding Base of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijng, China
| | - Aojun Liu
- Key Laboratory of Precision Oncology of Shandong Higher Education, Institute of Precision Medicine, Jining Medical University, Jining, China
| | - Yarui Su
- School of Life Sciences, Henan University, Kaifeng, China
- *Correspondence: Yarui Su, ; Yong Xia,
| | - Yong Xia
- Key Laboratory of Precision Oncology of Shandong Higher Education, Institute of Precision Medicine, Jining Medical University, Jining, China
- *Correspondence: Yarui Su, ; Yong Xia,
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Byun WS, Bae ES, Kim WK, Lee SK. Antitumor Activity of Rutaecarpine in Human Colorectal Cancer Cells by Suppression of Wnt/β-Catenin Signaling. JOURNAL OF NATURAL PRODUCTS 2022; 85:1407-1418. [PMID: 35544614 DOI: 10.1021/acs.jnatprod.2c00224] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Alkaloids derived from natural products have been traditionally used to treat various diseases, including cancers. Rutaecarpine (1), a β-carboline-type alkaloid obtained from Evodia rutaecarpa, has been previously reported as an anti-inflammatory agent. Nonetheless, its anticancer activity and the underlying molecular mechanisms remain to be explored. In the procurement of Wnt/β-catenin inhibitors from natural alkaloids, 1 was found to exhibit activity against the Wnt/β-catenin-response reporter gene. Since the abnormal activation of Wnt/β-catenin signaling is highly involved in colon carcinogenesis, the antitumor activity and molecular mechanisms of 1 were investigated in colorectal cancer (CRC) cells. The antiproliferative activity of 1 was associated with the suppression of the Wnt/β-catenin-mediated signaling pathway and its target gene expression in human CRC cells. 1 also induced G0/G1 cell cycle arrest and apoptotic cell death, and the antimigration and anti-invasion potential of 1 was confirmed through epithelial-mesenchymal transition biomarker inhibition by the regulation of Wnt signaling. The antitumor activity of 1 was supported in an Ls174T-implanted xenograft mouse model via Wnt target gene regulation. Overall, these findings suggest that targeting the Wnt/β-catenin signaling pathway by 1 is a promising therapeutic option for the treatment of human CRC harboring β-catenin mutation.
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Affiliation(s)
- Woong Sub Byun
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Eun Seo Bae
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Won Kyung Kim
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Sang Kook Lee
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
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Matsumoto T, Kitagawa T, Imahori D, Matsuzaki A, Saito Y, Ohta T, Yoshida T, Nakayama Y, Ashihara E, Watanabe T. Linderapyrone: A Wnt signal inhibitor isolated from Lindera umbellata. Bioorg Med Chem Lett 2021; 45:128161. [PMID: 34062253 DOI: 10.1016/j.bmcl.2021.128161] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 05/06/2021] [Accepted: 05/25/2021] [Indexed: 12/21/2022]
Abstract
Linderapyrone, a Wnt signal inhibitor was isolated from the methanolic extract of the stems and twigs of Lindera umbellata together with epi-(-)-linderol A. Linderapyrone inhibited TCF/β-catenin transcriptional activity that was evaluated using cell-based TOPFlash luciferase assay system. To evaluate the structure-activity relationship and mechanism, we synthesized linderapyrone and its derivatives from piperitone. As the results of further bioassay for synthesized compounds, we found both of pyrone and monoterpene moieties were necessary for inhibitory effect. cDNA microarray analysis in a linderapyrone derivative treated human colorectal cancer cells showed that this compound downregulates Wnt signaling pathway. Moreover, we successes to synthesize the derivative of linderapyrone that has stronger inhibitory effect than linderapyrone and ICG-001 (positive control).
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Affiliation(s)
- Takahiro Matsumoto
- Kyoto Pharmaceutical University, Misasagi, Yamashina-ku, Kyoto 607-8414, Japan.
| | - Takahiro Kitagawa
- Kyoto Pharmaceutical University, Misasagi, Yamashina-ku, Kyoto 607-8414, Japan
| | - Daisuke Imahori
- Kyoto Pharmaceutical University, Misasagi, Yamashina-ku, Kyoto 607-8414, Japan
| | - Atsushi Matsuzaki
- Kyoto Pharmaceutical University, Misasagi, Yamashina-ku, Kyoto 607-8414, Japan
| | - Youhei Saito
- Kyoto Pharmaceutical University, Misasagi, Yamashina-ku, Kyoto 607-8414, Japan
| | - Tomoe Ohta
- Nagasaki International University, Nagasaki 859-3298, Japan
| | | | - Yuji Nakayama
- Kyoto Pharmaceutical University, Misasagi, Yamashina-ku, Kyoto 607-8414, Japan
| | - Eishi Ashihara
- Kyoto Pharmaceutical University, Misasagi, Yamashina-ku, Kyoto 607-8414, Japan
| | - Tetsushi Watanabe
- Kyoto Pharmaceutical University, Misasagi, Yamashina-ku, Kyoto 607-8414, Japan.
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Byun WS, Bae ES, Cui J, Park HJ, Oh DC, Lee SK. Antitumor Activity of Pulvomycin via Targeting Activated-STAT3 Signaling in Docetaxel-Resistant Triple-Negative Breast Cancer Cells. Biomedicines 2021; 9:436. [PMID: 33920736 PMCID: PMC8074004 DOI: 10.3390/biomedicines9040436] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 04/14/2021] [Accepted: 04/16/2021] [Indexed: 01/14/2023] Open
Abstract
Although docetaxel-based regimens are common and effective for early-stage triple-negative breast cancer (TNBC) treatment, acquired drug resistance frequently occurs. Therefore, a novel therapeutic strategy for docetaxel-resistant TNBC is urgently required. Signal transducer and activator of transcription 3 (STAT3) plays a pivotal role in the tumorigenesis and metastasis of numerous cancers, and STAT3 signaling is aberrantly activated in TNBC cells. In this study, a docetaxel-resistant TNBC cell line (MDA-MB-231-DTR) was established, and mechanisms for the antitumor activity of pulvomycin, a novel STAT3 inhibitor isolated from marine-derived actinomycete, were investigated. Levels of activated STAT3 (p-STAT3 (Y705)) increased in docetaxel-resistant cells, and knockdown of STAT3 recovered the sensitivity to docetaxel in MDA-MB-231-DTR cells. Pulvomycin effectively inhibited the proliferation of both cell lines. In addition, pulvomycin suppressed the activation of STAT3 and subsequently induced G0/G1 cell cycle arrest and apoptosis. Pulvomycin also significantly inhibited the invasion and migration of MDA-MB-231-DTR cells through the modulation of epithelial-mesenchymal transition markers. In an MDA-MB-231-DTR-bearing xenograft mouse model, the combination of pulvomycin and docetaxel effectively inhibited tumor growth through STAT3 regulation. Thus, our findings demonstrate that the combination of docetaxel and STAT3 inhibitors is an effective strategy for overcoming docetaxel resistance in TNBC.
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Affiliation(s)
| | | | | | | | | | - Sang Kook Lee
- College of Pharmacy, Natural Products Research Institute, Seoul National University, Seoul 08826, Korea; (W.S.B.); (E.S.B.); (J.C.); (H.J.P.); (D.-C.O.)
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Byun WS, Bae ES, Park SC, Kim WK, Shin J, Lee SK. Antitumor Activity of Asperphenin B by Induction of Apoptosis and Regulation of Glyceraldehyde-3-phosphate Dehydrogenase in Human Colorectal Cancer Cells. JOURNAL OF NATURAL PRODUCTS 2021; 84:683-693. [PMID: 33398999 DOI: 10.1021/acs.jnatprod.0c01155] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Colorectal cancer (CRC) is a common and intractable malignancy with a high mortality risk. Conventional chemotherapeutics are effective for patients with early stage CRC, but the majority of deaths of CRC patients are linked to acquired drug resistance or metastasis occurrence. Asperphenin B (1), a lipopeptidyl benzophenone isolated from a marine-derived Aspergillus sp. fungus, reportedly possesses antiproliferative activity against cancer cells. However, its antitumor activity and the underlying molecular mechanisms remain unexplored. In this study, 1 induced G2/M phase cell cycle arrest and subsequent apoptotic cell death and inhibited tumor growth in a xenograft model. The 1-induced G2/M phase arrest was associated with the regulation of checkpoint proteins, including Chk1/2 and Cdc25c. The 1-induced apoptosis was correlated with an upregulation of p53 and cleaved caspases and a downregulation of survivin. Further experiments revealed that 1-mediated suppression of migration and invasion of metastatic HCT116 cells was partially associated with the downregulation of glyceraldehyde-3-phosphate dehydrogenase (GAPDH) expression. The antimetastatic potential of 1 was also confirmed by E-cadherin upregulation and N-cadherin and Snail downregulation, which were in turn associated with the GAPDH regulation. These findings highlight the potential use of 1 as a novel candidate for treating metastatic CRC with the modulation of GAPDH function.
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Affiliation(s)
- Woong Sub Byun
- College of Pharmacy, Natural Products Research Institute, Seoul National University, Seoul 08826, Republic of Korea
| | - Eun Seo Bae
- College of Pharmacy, Natural Products Research Institute, Seoul National University, Seoul 08826, Republic of Korea
| | - Sung Chul Park
- College of Pharmacy, Natural Products Research Institute, Seoul National University, Seoul 08826, Republic of Korea
| | - Won Kyung Kim
- College of Pharmacy, Natural Products Research Institute, Seoul National University, Seoul 08826, Republic of Korea
| | - Jongheon Shin
- College of Pharmacy, Natural Products Research Institute, Seoul National University, Seoul 08826, Republic of Korea
| | - Sang Kook Lee
- College of Pharmacy, Natural Products Research Institute, Seoul National University, Seoul 08826, Republic of Korea
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